For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
LAV40-50390D Page 1 of 8
Engine Parts List #1
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For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
LAV40-50390D Page 2 of 8
Engine Parts List #1
Ref # Part Number Qty Description
1 35010 Cylinder (Incl. 2 & 20) (2-5/8" Bore)
2 26727 Pin, Dowel
14 28277 Washer, Flat
15 30589 Rod, Governor (Incl. 14)
16 32651 Lever, Governor
17 31335 Clamp, Governor lever (Clamp is positioned towardsspark
plug end on 1977-78 and latermodels. It is positioned
opposite spark plugend on earlier models.)
18 650548 Screw, 8-32 x 5/16"
19 31361 Spring, Governor
20 32600 Seal, Oil
30 32882A Crankshaft
32 32323 Washer, Thrust
40 34851 Piston, Pin & Ring Set (Std.) (2-5/8" Bore)
40 34852 Piston, Pin & Ring Set (.010" OS)
40 34853 Piston, Pin & Ring Set (.020" OS)
41 32603B Piston & Pin Ass'y.(Std.)(Incl. 43)(2 -5/8")
41 32604B Piston & Pin Ass'y. (.010" OS) (Incl. 43)
41 32605B Piston & Pin Ass'y. (.020" OS) (Incl. 43)
42 34854 Ring Set (Std.) (2-5/8" Bore)
42 34855 Ring Set (.010" OS)
42 34856 Ring Set (.020" OS)
43 20381 Ring, Piston pin retaining
45 32875 Rod Assy., Connecting (Incl. 18)
46 32610 Connecting Rod Bolt (Early Production )
46 32610A Bolt, Connecting rod
46A 32609 Plate, Lock (Do not use with 32610A locking type screw)
48A 27241 Lifter, Intake valve
48 27241 Lifter, Exhaust valve
50 33553 Camshaft (MCR)
52 29914 Pump Assy., Oil
60 29745 Extension, Blower housing
66 30063 Screw, Torx T-30, 1/4-20 x 1/2"
69 35261 * Gasket, Mounting flange
70 34311C Mounting Flange Ass'y. (Incl. 72, 75 & 80)
72A 9556 Oil Drain Plug (Use as required)
72 30572 Plug, Oil drain (Incl. 73)
73 28833 * Drain Plug Gasket (Do not use w/plast ic plug)
75 27897 Seal, Oil
80 30574 Shaft, Mechanical governor
81 30590A Washer, Flat
82 30591 Gear Assy., Governor (Incl. 81)
83 30588A Spool, Governor
84 29193 Ring, Retaining
86 650488 Screw, 1/4-20 x 1-1/4"
89 610951 Key, Flywheel
92 650815 Washer, Belleville
93 650607 Nut, Flywheel
103 650489 Screw, 1/4-20 x 5/8"
110 34231 Ground Wire
119 33015A * Gasket, Cylinder head
120 33016A Head, Cylinder (Incl. 131)
125 29313C Exhaust Valve (STD)(Incl. 151) (Conventional Ports)
125 29315C Exhaust Valve (1/32" OS)(Incl. 151) (Conventional Ports)
126 29314B Intake Valve (STD)(Incl. 151) (Conventional Ports)
126 29315C Intake Valve (1/32" OS)(Incl. 151) (Conventional Ports)
127 26073 Washer (Not used in late production)
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LAV40-50390D Page 3 of 8
Engine Parts List #1
Ref # Part Number Qty Description
127 650691 Washer (Used on late production)
130 6021A Screw, 5/16-18 x 1-1/2" (Use as requi red)
130 650818 Screw, 5/16-18 x 1-1/2" (Use as requi red)
131 650694A Screw, 5/16-18 x 2" (Use as required)
131 650697A Screw, 5/16-18 x 2-1/2" (Use as requi red)
135 33636 Spark Plug (J-8C)
149 31671 Valve Spring Cap) (Used in early prod uction)
150 31672 Spring, Valve
151 31673 Cap, Lower valve spring
169 31619A * Gasket, Valve spring cover
170 31337A Body Assy., Breather (Incl. 169 & 171 )
171 31410 Element, Breather
174 650128 Screw, 10-24 x 1/2"
178 29752 Nut & Lockwasher, 1/4-28
179 30593 Clip, Magneto wire
181 6201 Screw, 1/4-28 x 7/8"
182 6201 Screw, 1/4-28 x 7/8"
184 26756 * Gasket, Carburetor
185 33004A Pipe, Intake (Incl. 224)
186 33151 Link, Governor spring
200 33131A Control Bracket (Incl. 203 thru 206)
202 33802 Spring, Compression
203 31342 Spring, Compression
204 650549 Screw, 5-40 x 7/16"
205 650777 Screw, 6-32 x 21/32"
206 610973 Terminal Assy.
207 33133 Link, Governor-to-throttle
209 30200 Screw, 10-24 x 9/16"
210 27793 Clip, Conduit
211 28942 Screw, 10-32 x 3/8"
223 650451 Screw, 1/4-20 x 1"
224 32649A * Gasket, Intake
238 650707 Screw, 10-32 x 5/8"
239 33051 * Gasket, Air cleaner
240B 33005 Body, Air cleaner
246B 33006 Element, Air cleaner
248 33008 Tube, Air cleaner
250A 33007 Cover, Air cleaner
260 32455B Housing, Blower NOTE: Replacement hardware may differ
when servicing starter assy. or blower housing. Refer to
Service Bulletin 508.
261 650561 Screw, 1/4 20 x 5/8"
277 30063 Screw, Torx T-30, 1/4-20 x 1/2" (Use as req.)
277 650795 Screw, 1/4-20 x 2-1/4"
287A 29752 Nut & Lockwasher, 1/4-28 (Use as requ ired)
287 29716 Screw, 1/4-28 x 7/16" (Use as require d)
287 30513 Screw & Lockwasher, 1/4-28 x 1/2"
287 Pop Rivet (Purchase locally) (3/16" d ia.)
290 29774 Fuel Line(Braided 8-1/4")(21 cm)(Use as req.)
290 34357 Fuel Line (Epichlorohydrin 6-3/4") (1 7 cm)
290 30705 Fuel Line (Braided 16")(40 cm)(Use as req.)
292 26460 Fuel Line Clamp (Use as required)
300 32170A Fuel Tank (Incl. 292 & 301)
301 410144B Fuel Cap (Std.) (Use as required)
301 33032 Fuel Cap (Use as required)
301 34210 Fuel Cap (use as required)
305 34264 Oil Fill Tube
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LAV40-50390D Page 4 of 8
Engine Parts List #1
Ref # Part Number Qty Description
313 33876 Gasket, Stator
325A 27275 Clip, Hi-tension wire (Use as require d)
370 34346 Decal, Instruction
370K 31268 Decal, "Choke"
370A 550223 Name & Instruction Decal
375 610964 Magneto (W/Ring Gear) NOTE: This magneto is not
available as an assembly. The magneto number is shown for
reference purposes only. Order component parts individually,
as shown in parts breakdown. Refer to Division 5, Section B,
page35 or Fiche 6, Grid F-13 for breakdown)
377 30547A Contact Assy., Breaker
378 30548B Condenser
379 631021 Inlet Needle, Seat & Clip Assy.
380 632066 Carburetor (Incl. 184) (Refer to Division 5, Section A, page
164 or Fiche 6, Grid F-7 for breakdown)
400 33238D * Gasket Set (Incl. items marked *)
420 730225 SAE 30 4-Cycle Engine Oil (Quart)
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LAV40-50390D Page 5 of 8
Engine Parts List #2
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LAV40-50390D Page 6 of 8
Engine Parts List #2
Ref # Part Number Qty Description
19 31361 Spring, Governor
32 32323 Washer, Thrust
92 650815 Washer, Belleville
93 650607 Nut, Flywheel
182 6201 Screw, 1/4-28 x 7/8"
261 650561 Screw, 1/4 20 x 5/8"
262 650561 Screw, 1/4-20 x 5/8"
286A 32237 Screen, Flywheel
287 29716 Screw, 1/4-28 x 7/16" (Use as require d)
287 30513 Screw & Lockwasher, 1/4-28 x 1/2"
287 Pop Rivet (Purchase locally) (3/16" d ia.)
305 34264 Oil Fill Tube
306 34265 Gasket, Oil fill tube
306 34282 "O" Ring (This "O" ring is required with metal fill tube only
when replacement mounting flange with .777 dia. oil fill hole
has been used.)
307 33590 "O" Ring
309 650562 Screw, 10-32 x 1/2"
310 34267 Dipstick (Incl. 307)
327 32236 Plug, Screen
370 34346 Decal, Instruction
370A 550223 Name & Instruction Decal
379 631021 Inlet Needle, Seat & Clip Assy.
390A 590450A Side Mount Rewind Starter NOTE: Replacement hardware
may differ when servicing starter assy. or blower housing.
Refer to Service Bulletin 508. (Refer to Division 5, Section C,
page 27 or Fiche 6, Grid G-4 for breakdown)
1171 650737 Screw, 1/4-20 x 1/2"
1175 590441 Bracket Ass'y. (Use as required)
1176 650639 Open End Rivet (Use as required)
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LAV40-50390D Page 7 of 8
Engine Parts List #3
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For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
LAV40-50390D Page 8 of 8
Engine Parts List #3
Ref # Part Number Qty Description
19 31361 Spring, Governor
32 32323 Washer, Thrust
169 31619A * Gasket, Valve spring cover
171 31410 Element, Breather
174 650128 Screw, 10-24 x 1/2"
182 6201 Screw, 1/4-28 x 7/8"
238 650707 Screw, 10-32 x 5/8"
262 650561 Screw, 1/4-20 x 5/8"
275B 27181B Muffler (Incl. 274 & 277)
277 30063 Screw, Torx T-30, 1/4-20 x 1/2" (Use as req.)
277 650795 Screw, 1/4-20 x 2-1/4"
287 29716 Screw, 1/4-28 x 7/16" (Use as require d)
287 30513 Screw & Lockwasher, 1/4-28 x 1/2"
287 Pop Rivet (Purchase locally) (3/16" d ia.)
290 29774 Fuel Line(Braided 8-1/4")(21 cm)(Use as req.)
290 34357 Fuel Line (Epichlorohydrin 6-3/4") (1 7 cm)
290 30705 Fuel Line (Braided 16")(40 cm)(Use as req.)
292 26460 Fuel Line Clamp (Use as required)
305 34264 Oil Fill Tube
415 730162 Muffler Adapter Kit (Incl. 274 & 277A ) (Inverted Ports)
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